Error Code P2055: What It Means & What To Do?
OBD Code P2055 - Reductant Injection Valve Circuit High Bank 1 Unit 2
The trouble code P2055 can be defined as
Reductant Injection Valve Circuit High Bank 1 Unit 2. The reductant injection
valve circuit is being monitored by the engine control module. This trouble
code would be set by the ECM when the reductant injection valve circuit would
not be as per the specifications set by the manufacturer.
Learn More About OBD Error Code P2055
The engine control module, powertrain control module or the transmission control module monitors this circuit depending upon the particular automobile. Here the PCM has detected some fault in the reductant injection valve circuit. The main role of the reductant injector is to lower the noxious gases which are being expelled via the diesel particulate filter (diesel engines) or catalytic converter. Bank 1 here would indicate the bank of the engine which contains the number one cylinder.
What causes this problem with the Reductant Injection Valve Circuit High Bank 1 Unit 2
Malfunctioning wiring or connectors
- There can be inoperative sensor
- Some issues related to the decrease in back pressure
- Unusable exhaust
- There can be distorted exhaust gas temperature sensor
Replace/Repair These Parts To Fix Code P2055
- Diesel Particulate Filter – The diesel particulate filter acts as an important
component in managing the particulate emission in the exhaust system. If the
filter is damaged, it may lead to increased emissions and pollutants through
the tailpipe. Thus, replace damaged filter now!
- Engine Control Module – It is not always the components, but the ECM that can also
be faulty. It can cause misinterpretation of correct data thus leading to wrong
operational decisions which will affect the transmission and overall engine
performance. Thus, replace faulty module and reprogram it now!
- Diesel Exhaust Fluid Heater – If the diesel exhaust fluid heater is faulty, it
will not be able to aid in conversion of harmful nitrous oxide compounds to
nitrogen, carbon dioxide and water vapours to control emissions. Thus, replace
it immediately.
- Exhaust System Parts - Your exhaust system begins at the engine with the purpose of
removing toxic gases and fumes from your vehicle. The components are a series
of pipes, catalytic converters, sensors, mufflers, and often a resonator, as
well as other emission devices. Thus, replace damaged exhaust system now!
- Powertrain Control Module - Powertrain Control Module can also be faulty in rare cases
and thus needs through checks for system and software errors. Thus check and
replace it, if required.
- Electronic Control Unit – The ECU manages the cooling system to control the battery operating temperatures and thus must be replaced, if found faulty. Thus, buy new ECU modules and components from us!
- Diagnostic Tool – Make use of quality diagnostic tools to resolve any OBD error code.
Buy quality diagnostic tools from us!
Symptoms Of The OBD Error Code P2055
Willing to know some common symptoms of OBD Trouble Code P2055? Your wish is our demand. Have a look at them below:
Common Symptoms
- Visibility in the check engine light
- A lot of black smoke mightstart coming out from the tailpipe during acceleration
How To Correct P2055 Reductant Injection Valve Circuit High Bank 1 Unit 2
If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P2055.
- Make sure to install an inline resistor
- It is essential to restore the flawed wiring, connectors, or components
- The malfunctioning PCM should be repaired or replaced as per the need
- Carefully adjust the faults in the exhaust gas temperature/pressure sensor
- Recondition the non-functioning electronic control unit
There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade catalytic converter, pcm, oxygen sensor, exhaust system, air pressure sensor, reductant injector valve, dpf filter and a lot more for our precious customers.
Easy Diagnosis Of Engine Error OBD Code P2055
If you want to easily diagnose this fault code, then all you have to do is to follow the steps which are mentioned below:
A technician begins by hooking the vehicle to an OBD-II scanner to verify that the code is present, and check for other codes. The freeze frame data along with current data is recorded, and the codes are then cleared to see if they reoccur. Visual inspection of the wiring and connectors to check for loose connections, corrosion, or shorts is done. Then the process of diagnosis should start.
The mechanic should visually inspect the reductant heater system harnesses as well as connectors. Then the mechanic has to check the wires, connectors and other electrical components and quickly replace them if he finds them to be damaged or defective. After that all the stored codes as well as freeze frame data should be retrieved.
This information should be written down before clearing the codes and then the vehicle should be take out for a test drive unless and until the powertrain control module would enter the readiness mode or the code is reset. Now if the PCM enters readiness mode, then it would that this code is intermittent and might be very difficult to diagnose it.
If this is the real case, then you should allow the conditions which have given contribution in storing this code to worsen before the correct diagnosis can be made. Carefully reset the code and then the source of vehicle information to get diagnostic flow charts, connector pin out charts, connector face views, as well as component testing procedures and specifications should be searched.
This information would be very helpful in completing the next step of your diagnosis. The DVOM should be used to check the power supply to the SCR control system. The fuses with the circuit loaded should be inspected so that the misdiagnosis can be avoided.
Now if the right power (battery voltage) and ground circuits have been located, then a scanner should be used to activate the reductant injector valve and check the output control circuit voltage. Then if the voltage is not sufficient, then it would that there are some faults in the controller or it might have faced a programming error.
If the voltage output circuit is as per the parameters set by the manufacturer, then DVOM should be used to check the reductant injection valve. If the valve is not as per the specifications set by the manufacturer, then it would mean that it has a failure. It is very important to replace it. If all the components check out, inspect for the fault in the PCM as it can sometime store wrong OBD code and thus might need replacement or reprogramming.
Common Mistakes When Diagnosing The P2055 Code
- Sometimes the technician might not know the difference between the oxygen sensor and the exhaust gas temperature sensor as both of them look same and he might replace the wrong sensor, giving rise to more problems.